I am setting up an mail server with postfix at the moment, and I am almost done with it. But I need to archive all incoming mails. My first setup was to set the
sender_bcc_maps parameter and the
recipient_bcc_maps parameter to an external email address. This sends a copy to the given email address.
But what I really want is a second identical mail server with the same users and the corresponding email addresses. This server should receive a copy of each mail that looks like it was send directly to the second server.